Pregnancy signs, but am I pregnant?

Ok! So, my husband and I have never used protection while married, we've been married for 2 years, but most of that he's been away being in the military and all. We've always said "if it happens it happens, if not oh well", so we've never like really set out to try. I was supposed to start my period Saturday, Oct. 25th. Friday before that, the 24th, I had light spotting, it was brownish in color. I put a pantyliner in but nothing else happened. Since then I've not had any spotting, SLIGHT cramps the day after the spotting (usually I cramp REALLY bad before my period), my breasts have been sore, nipples also (my breasts have only been sore once before my period that I can remember), they seem to not be too sore today, but it kind of comes and goes, sometimes it's worse than others. I have been eating SO much, and yes I do get hungry more when my period is coming, but this is more like I just can't get full, never been this hungry before, I've had alot of heartburn, some headaches, and I'm SOOOO exhausted. I've not taken a test yet..I heard the hormone shows up more 1-2 weeks after your missed period so I'm gonna wait. I'm having no signs that my period will be here anytime soon. Sometimes I'll have some pressure, is the only way I can describe it, in my lower stomach, kinda like I need to stretch. Anyways, just figured I could maybe get someone's opinion on this :). I really hope I am, but if I'm not I'm gonna try my best to not be upset about it haha. Thanks!!